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http://dx.doi.org/10.11626/KJEB.2019.37.4.726

Assessment of fish fineness ratios passing through a fishway  

Moon, Woon-ki (Environmental Research Institute of Chungrok)
Bae, Dae-Yeul (Environmental Research Institute of Chungrok)
Kim, Do-Hyun (Environmental Research Institute of Chungrok)
Shin, Hyun-Beom (Korea Rural Community Corporation)
Suh, Jung Bin (Korea Rural Community Corporation)
Lim, Kyeong Hun (Korea Rural Community Corporation)
Lee, Eui-Haeng (Korea Rural Community Corporation)
Yoo, Jae-Sang (Hanmac Engineering Co., Ltd.)
An, Kwang-Guk (Department of Biological Science, College of Bioscience and Biotechnology, Chungnam National University)
Kim, Jai-Ku (Environmental Research Institute of Chungrok)
Publication Information
Korean Journal of Environmental Biology / v.37, no.4, 2019 , pp. 726-734 More about this Journal
Abstract
To understand the relationship between water velocity in a fishway and fish morphology, the fineness ratio of fish, expressed as the standard length to the body depth, was measured. The fineness ratios of fish groups belonging to Cyprinidae, Acheilognathinae, Centropomidae, and Centrachidae were relatively low. The FRs of other groups, excluding eel-shaped types of fish, were over 4.5, indicating streamlined structures. The fineness ratios of Korean fish were classified into three different types: type I was Bitterling-Carp group that favored a slow-flowing pool habitat(FRs ranged from 2.1 to 3.3), type II was the Chub group representing streamlined types (FRs FRs ranged from 3.7 to 5.2), and type III was the Smelt-Barbel fish group that preferred riffle-run habitats with high velocity (FRs is over 5.2). Fish abundance analysis of fish using the fishway during the experimental periods showed a relatively high abundance of both type II and III compared to type I. The FRs of the fish passing through fishway(velocity 0.5-1.0 m s-1) ranged from 4.5 to 5.0, indicating that the fish using the fishway were mainly the streamlined type. As one of the standard fishways in Korea, the flow rate of the ice harbor type ranged from 0.2 to 2.6 m s-1. The FR values of the fish groups using the fishway ranged from 4.3 to 5.0. In contrast, the flow rate measured in an artificial channel type of fishway (same as a natural type of fishway) ranged from 0.1 to 1.9 m s-1 and the FR values for the fish groups using a natural type of fishway ranged from 3.3 to 5.3. The low FR values in natural fish are considered to be due to differences in the flow rates between the two types of fishways.
Keywords
fishway; fineness ratio; streamline; swimming ability;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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